Payment card storing tokenized information

ABSTRACT

Provided are a payment card, system and method for storing and reading tokenized payment account information from a payment card. In an exemplary embodiment, a payment card may include a substrate forming a body of the payment card, and an electronic chip attached to or included in the substrate. According to various exemplary embodiments, the electronic chip may include a storage storing tokenized payment account information corresponding to a payment account linked to the payment card. The electronic chip may be read by a payment terminal and may provide the tokenized payment information to the payment terminal during reading.

CROSS-REFERENCE TO RELATED APPLICATION

The present application is a continuation of U.S. Pat. Application No.16/939,514, filed on Jul. 27, 2020, in the U.S. Pat. and TrademarkOffice, which is a continuation of U.S. Pat. Application No. 15/069,292,filed on Mar. 14, 2016, which claims the benefit of U.S. ProvisionalPat. Application No. 62/132,300, filed on Mar. 12, 2015, the entirecontents of each of which are hereby incorporated by reference for allpurposes.

FIELD

Exemplary embodiments described herein relate generally to payment cardsused for the payment of goods and/or services and, more particularly, tosecuring data stored on a payment card through the use of tokens.

BACKGROUND

Various payment systems utilize integrated circuit (IC) cards (e.g.,smart cards, EMV cards, chip cards, and the like) which may beinterfaced with a payment terminal via electrical points of contact onthe card. During a purchase transaction, the payment card account numberand other information may be uploaded from the EMV payment card to thepayment terminal via the integrated circuit contacts and a contact cardreader associated with the payment terminal. For example, the consumeror EMV payment card user may be directed to physically “tap” or insertthe EMV payment card onto a specific contact surface or into a specificslot associated with the card reader so that data may be transferred.Authorization and clearing may then proceed in substantially the samemanner as for a transaction initiated with a conventional credit card ordebit card having a magnetic stripe (putting aside additional securitymeasures that may be implemented by using the processing capabilities ofthe IC payment card).

Payment tokens are surrogate values that may be used to replace aprimary account number (“PAN”) of a payment card in the payment systems.These tokens provide increased protection against fraudulent use such ascounterfeiting, account misuse, and other forms of fraud. In March 2014,EMVCo published the “EMV® Payment Tokenisation Specification - TechnicalFramework v1.0” which provides a framework for implementing paymentservices in which the payment tokens are used to initiate payment. Theframework generally describes the payment tokenization landscape, thetypes of entities whose participation is key to supporting paymenttokenization, sufficient detail to implement multiple use cases, and thebenefits of adopting a unified approach.

However, despite various payment use cases involving the transfer ofpayment tokens instead of PANs, an EMV payment card still has a primaryaccount number linked with the card that is stored within the electronicchip and within the magnetic stripe. As a result, when the electronicchip or the magnetic stripe from the EMV card is read by an EMV readereither by contact or contactless, the PAN and other sensitive cardholderdata is read and is transferred from the EMV card to the reader which isthen transferred to the payment network during processing of thepayment. That is, sensitive cardholder information stored on theelectronic chip is put at risk during a payment transaction. Therefore,it would be desirable to provide systems and methods which allow paymentcards (including contact and contactless chip payment cards and mobiledevices) to be personalized in a way which prevents PANs and othersensitive cardholder data from being exposed during a transaction.

BRIEF DESCRIPTION OF THE DRAWINGS

Features and advantages of the exemplary embodiments, and the manner inwhich the same are accomplished, will become more readily apparent withreference to the following detailed description taken in conjunctionwith the accompanying drawings, in which:

FIG. 1 is a diagram illustrating a front side and a back side of apayment card in accordance with an exemplary embodiment.

FIG. 2 is a diagram illustrating a payment card personalization systemin accordance with an exemplary embodiment.

FIG. 3 is a diagram illustrating an overview of a payment system inaccordance with an exemplary embodiment.

FIG. 4 is a diagram illustrating a payment terminal in accordance withan exemplary embodiment.

FIG. 5 is a diagram illustrating a payment processing method inaccordance with an exemplary embodiment.

FIG. 6 is a diagram illustrating a method of enforcing domainrestrictions within a payment system in accordance with an exemplaryembodiment.

Throughout the drawings and the detailed description, unless otherwisedescribed, the same drawing reference numerals will be understood torefer to the same elements, features, and structures. The relative sizeand depiction of these elements may be exaggerated or adjusted forclarity, illustration, and/or convenience.

DETAILED DESCRIPTION

In the following description, specific details are set forth in order toprovide a thorough understanding of the various exemplary embodiments.It should be appreciated that various modifications to the embodimentswill be readily apparent to those skilled in the art, and the genericprinciples defined herein may be applied to other embodiments andapplications without departing from the spirit and scope of theinvention. Moreover, in the following description, numerous details areset forth for the purpose of explanation. However, one of ordinary skillin the art should understand that embodiments may be practiced withoutthe use of these specific details. In other instances, well-knownstructures and processes are not shown or described in order not toobscure the description with unnecessary detail. Thus, the presentdisclosure is not intended to be limited to the embodiments shown, butis to be accorded the widest scope consistent with the principles andfeatures disclosed herein.

In general, and for the purpose of introducing concepts of exemplaryembodiments, EMV payment card (IC payment card or electronic chip card)personalization and transaction techniques are described herein whichallow EMV payment cards to be personalized such that the EMV cards maybe created with (i) payment tokens (e.g., stored in a memory of acontact or contactless chip) and (ii) a primary account number (PAN) maybe printed and/or embossed on a face and/or stored in a magnetic stripeof the payment card. Further, exemplary embodiments allow domain andother transaction restrictions to be used during authorizationprocessing to provide further increased protection againstcounterfeiting, account misuse, and other forms of fraud. In someembodiments, chip cards with payment tokens may also operate in anoffline mode where the cards are personalized to support offlinetransactions at terminals that also support such transactions. In suchembodiments, domain restrictions may be validated using data provided ina clearing message, instead of an authorization message. As used herein,the term “chip card” or “payment card” is generally used to refer to acontact or contactless payment card (e.g., such as a card configured tooperate as an EMV payment card or IC payment card).

Tokens and several tokenization use cases are proposed by the EMVCoPayment Tokenisation Specification, including Mobile NFC at Point ofSale, Mobile Digital Wallet E-commerce, Card-on-File E-Commerce, andScan at Point of Sale. Various exemplary embodiments herein personalizethe contact and/or contactless chip on a credit or debit card with apayment token and also allow the PAN to remain on the physical card inthe embossing/printing and/or on the magnetic stripe. Today’s businessclimate includes large scale data breaches where credit and debit cardaccount data is compromised and used by criminals to conduct bothcounterfeit and card not present fraud. The counter measure to creditcard fraud that is widely supported globally today is the introductionof EMV technology to cards and devices as well as merchant terminals.Proper deployment of EMV may prevent a card from being cloned orcounterfeited based upon a data compromise of transactions that wereinitiated by an EMV enabled card at an EMV terminal resulting in a fullgrade EMV transaction.

However, transactions initiated by an EMV payment card at an EMVterminal (e.g., electronic chip cards that are read by an electronicterminal) do not include encrypted PAN and expiration dates. Rather, anactual PAN number and an actual expiration date are read by the EMVterminal from the EMV payment card. Consequently, it is possible thatcompromised EMV transactions can result in the PAN and expiration datebeing exposed to criminals. The stolen PAN and expiration date data maybe used by criminals to initiate card not present transactions whereonly the PAN and the expiration date are required such as in electroniccommerce, card on file, mail order/telephone order (MOTO) channels, andthe like. This is sometimes referred to as “cross channel fraud.”

According to various exemplary embodiments, EMV cards are personalizedwith one or more payment tokens instead of a PAN and/or an expirationdate and provide an opportunity to reduce the impact of cross channelfraud. EMV transactions initiated by EMV cards that contain a paymenttoken instead of a PAN result in transactions in which only paymenttokens, and not PANs, are read and are passed between the EMV card andthe EMV terminal. In the event of a data breach, any compromisedtransactions that were initiated with payment tokens are not subject tocross channel fraud because the payment tokens are restricted in theirusage by the domain restrictions that are contemplated as part of theEMV Payment Tokenization Specification. Attempts to utilize stolen orcompromised tokens according to the exemplary embodiments for crosschannel fraudulent activity will result in transactions being declineddue to the domain restrictions described herein being applied within theissuer’s designated token vault. As a result, there is business value inreduced fraud exposure and increased payments system integrity thatprovides for a reduction in reputational risks associated with theunderlying impact of data breaches on the compromised entity, thepayment brands, and the payments industry.

FIG. 1 illustrates a front side and a back side of a chip-based paymentcard 100 (i.e., card 100) in accordance with an exemplary embodiment.Referring to FIG. 1 , the card 100 includes a substrate 102 that formsthe physical structure or housing for the card 100. The substrate 102may have dimensions of a normal credit card size. The substrate 102 mayinclude or may be formed of a plastic material, for example, polyvinylchloride, polyethylene terephthalate based polyester, acrylonitrilebutadiene styrene, polycarbonate, and the like. Various lettering,characters, logos, and the like, associated with a card issuing bank maybe written or printed on an outside surface of the substrate 102. Insome examples, a primary account number (PAN) 106 may be embossed and/orprinted on the surface of the substrate 102. Also, an expiration date110 may be embossed and/or printed on the outer surface of the substrate102.

In this example, the card 100 further includes an electronic chip 104that is attached to or otherwise included within the card 100. Forexample, the electronic chip 104 may be embedded within the substrate102 of the card 100 during a manufacturing process of the card 100.According to various exemplary embodiments, tokenized payment accountinformation of a payment account linked to the card 100 may be storedwithin a storage or memory of the electronic chip 104. For example, thetokenized payment information may include a tokenized PAN, a tokenizedexpiration date, and the like. The electronic chip 104 may be capable oftransferring the tokenized payment account information to a paymentterminal or reader such as the terminal shown in FIG. 4 . For example,the electronic chip 104 may include one or more electrical contacts thatare configured to be contacted by a reader to form a circuit connectionenabling data stored on the electronic chip 104 to be transferred to thereader. As another example, the electronic chip 104 may communicate witha payment terminal or a reader wirelessly and without contact, forexample, using a radio wave transmission such as a contactless 13.56 MHzcommunication, a magnetic field transmission, and the like. In somecases, the electronic chip 104 may include a storage (not shown) and aprocessor (not shown) enabling the chip 104 to electronicallycommunicate either through contact or contactless with a paymentterminal. Prior to being transferred by contact or contactlessconnection, the tokenized payment information may be encrypted.

FIG. 1 further illustrates an example of a back side surface of thesubstrate 102 of the card 100. In this example, the card 100 furtherincludes a magnetic stripe 108 adhered to or otherwise attached to thesurface of the substrate 102. According to various exemplaryembodiments, tokenized payment information may be encoded within themagnetic stripe 108. Accordingly, when the magnetic stripe 108 is readby or swiped past a magnetic reading head, tokenized payment informationmay be transferred from the magnetic strip 108 (or the card) to thereader, instead of actual payment account information. For example, thetokenized payment account information may include one or more of atokenized PAN, a tokenized expiration date, and the like.

FIG. 2 illustrates a payment card personalization system 200 inaccordance with an exemplary embodiment. As shown, a number ofcomponents, entities or systems may be involved in a personalizationprocess pursuant to the exemplary embodiments. The system 200 mayinclude one or more financial account issuers 230 (such as banks orother financial institutions), one or more token service providers 220,one or more card personalization systems 210, and the like. Processingof the system 200 may result in the personalization and issuance ofmultiple different payment devices 100 (e.g., cards) having both paymenttokens stored in an electronic chip 104 and/or a magnetic stripe 108thereof, and PANs (e.g., embossed or printed on a substrate 102 of thepayment device 100 and/or in some examples stored in the magnetic stripe110 thereof.

Pursuant to some embodiments, the issuer 230 may generate data forpersonalization, for example, by creating a file or feed including PANand PAN expiry data. In some embodiments, the issuer data is provided toa token service provider 220 for processing to generate or assign one ormore payment tokens to each payment account to be tokenized. Forexample, the token service provider 220 may then communicate data to thecard personalization system 210 to perform the personalization of acard. The data may be transmitted via an application programminginterface (API) or in a batch or other transmission mode, and mayinclude the PAN and PAN expiry originally assigned by the issuer 230 aswell as the corresponding payment token and payment token expiry dategenerated by the token service provider 220. The card personalizationsystem 210 may then be operated to personalize data on the paymentdevice 100 such that tokenized payment information such as a paymenttoken for a PAN and a payment token for an expiry are stored in anelectronic chip 104 (or memory) of the payment device 100 and the PANand PAN expiry are printed or embossed on a face of the substrate 102 ofthe payment device 100. In some examples, the tokenized paymentinformation may also be encoded in the magnetic stripe 108 of thepayment device 100. After the payment device 100 has been personalized,it may be provided to a cardholder of the account for use.

In some embodiments, the token service provider 220 may interface withcard personalization systems 102 (or bureaus) and/or with issuers 230directly, for example, via an API, and the like, if the issuer 230 isdirectly responsible for personalization and/or card production.Pursuant to some embodiments, the API is implemented across a securedata exchange framework and may support at least the following dataelements:

Field Length Format Primary Account Number Variable (13 to 19 digits)Numeric Expiration Date 4 Numeric Payment Token Variable (13 to 19digits) Numeric Payment Token Expiration Date 4 Numeric Payment AccountReference (PAR) 29 Alphanumeric Token Requester ID 11 Numeric Last 4digits of PAN 4 Numeric

The interface established between the token service provider 220 and thecard personalization system 210 may be leveraged for not only initialcard issuance but also for supporting lifecycle events. Issuer drivencard replacement decisions associated with business events such asexpired cards, cardholder reports of lost/stolen/never received ordamaged or inoperable cards, or replacement due to exposure to databreaches may be accounted for in regards to the business integrationbetween the issuer 230, the card personalization system 210, and thetoken service provider 220. In some examples, card personalizationsystems 210, or issuers 230 that personalize their own cards, mayintegrate the API data feed into their current business operations sothat the data can be integrated into the data preparation.

According to various exemplary embodiments, a new API may be establishedbetween the token service provider 220 and one or more cardpersonalization systems 210. In some embodiments, an existing lifecyclemanagement API or interface between the token service provider 220 andthe issuer 230 may remain in place to support the ongoingsynchronization between the issuer 230 and the token service provider220 regarding lifecycle events that impact the ongoing payment token toPAN mapping. An existing API may be updated with new indicators tosignal an issuer’s intention to trigger a new cardpersonalization/production or replacement cardpersonalization/production based on various issuer-driven or cardholderrequested card production requests.

Tokenization of chip cards also creates an opportunity to embed certaintokenization data within the personalized EMV chip (e.g., electronicchip 104) and to identify such data through the creation of new tags asdefined and assigned by EMVCo. EMV uses tags to uniquely identify thedata object from the list of various tags defined in the EMVspecifications. Tags are typically encoded over 1 or 2 bytes. Tags maybe assigned to support the ability to uniquely identify existing dataelements used in tokenization including a token requestor ID which hasnot yet been accounted for in regards to EMV tags. Examples of possiblenew EMV tags are illustrated in Table 1. For example, the paymentaccount reference (PAR) tag may be a non-financial reference assigned toeach unique PAN and used to link a payment account represented by thatPAN to affiliated payment tokens. The fixed length 29 character dataformat may include a four (4) character BIN controller identifierassigned by EMVCo to registered BIN controllers, followed by a 25character value that is unique across PANs associated and defined by theregistered BIN controller. As another example, the token requestor IDmay be a value that uniquely identifies the pairing of the tokenrequestor with the token domain. Thus, if a given token requestordesires tokens for multiple domains, it may have multiple tokenrequestor IDs, one for each domain. The token requestor ID may be an11-digit numeric value assigned by a token service provider and may beunique within the token vault. As an example, numerical positions 1-3 ofthe token requestor ID may be token service provider code unique to eachtoken service provider and numerical positions 4-11 of the tokenrequestor ID may be assigned by the token service provider for eachrequesting entity and token domain.

According to various exemplary embodiments, domain or other controls maybe applied by the token service provider 220 (or other entity) during apayment authorization transaction to improve fraud control. For example,cross channel fraud may be controlled by ensuring that the token vaultoperated by the token service provider 220 applies domain restrictionsfor transactions initiated with payment tokens from chip cards. Forexample, when the token vault receives a transaction authorizationrequest from the payment network, the chip cryptogram (ARQC) may bevalidated by the token vault, and other fields of the authorizationmessage may be interrogated to ensure the transaction satisfies theexpectations of the valid domain assigned to the token card ranges. Forexample, an electronic chip card payment token that is authorized for atransaction initiated from a POS entry mode associated with atransaction in which the payment account information is read from amagnetic stripe may be declined by a domain restriction control becausethe payment token is not valid for a magnetic stripe. As anotherexample, transactions initiated with the payment token that showed POSentry modes associated with electronic commerce, Mail Order/TelephoneOrder, other card not present channels, and the like, may also fail adomain restriction control because the POS entry mode is not contact orcontactless chip read. The lack of a valid chip cryptogram on thesetransactions would also be domain restriction controls that would failand trigger a transaction decline due to failing domain restrictioncontrol logic.

The first four to six digits of a PAN (often six digits) typicallyidentify the issuing financial institution for the PAN or otherwise arekey for routing transactions in a payment system. This portion of thePAN is known as the BIN (Bank Identification Number) or IIN (IssuerIdentification Number). If tokens are to be used for routing oftransactions, as proposed in the Tokenization Standard, the leadingdigits of the tokens must also be constituted by a BIN. According to aproposal in the Tokenization Standard, tokens are not to have the sameBINs as PANs. In other words, the Tokenization Standard proposes thatcertain BIN ranges be assigned exclusively for generating tokens, withsuch token-dedicated BINs not to be shared with PANs.

Accordingly, when a chip card is read by an EMV reader, the chip cardmay provide tokenized payment account information to the EMV reader (viacontact or contactless reading). The tokenized payment information mayinclude a tokenized PAN, a tokenized expiration date, and the like. Inresponse to receiving the tokenized payment information, the EMV readermay generate an authorization request message based on the receivedtokenized payment information and transmit the authorization requestmessage to a payment network, and the like, for payment processing. Whengenerating the authorization request message, the EMV reader may insertthe tokenized PAN into the authorization request message and alsoindicate within the message that the tokenized PAN was read from achip-based payment card (i.e., using an entry mode field) to indicatethat the card was read by contact or contactless with the chip, and thelike. When a token aware device such as a token service providerreceives the authorization request message, the token service providermay determine that the value of the PAN is a tokenized value from a chipcard instead of an actual value based on, for example, the BIN of thetokenized PAN. Accordingly, the token service provider may verify thatthe tokenized PAN has been received through a contact or contactlessreading from a chip card by checking the entry mode field of theauthorization request message.

In a case in which the tokenized PAN according to various exemplaryembodiments has been stolen, the fraudster may attempt to use thetokenized PAN as if it were an actual PAN, for example, in a card notpresent (CNP) e-commerce transaction with a merchant. In this case, thefraudster may input the tokenized PAN into a card number field of amerchant website. In response to receiving the tokenized PAN, a paymentterminal of the merchant website may generate an authorization requestmessage including the tokenized PAN in an account field and transmit theauthorization request message to the payment network for processing. Inthis case, when the token service provider receives the tokenized PAN inthe account field, the token service provider will detect that the PANis a tokenized PAN, for example, based on the first 4 to 6 digits of thePAN. Accordingly, the token service provider will attempt to verify thatthe tokenized PAN has been received from a card present transactionbased on an entry mode field of the authorization request message. Butin this case, because the tokenized PAN was received from an e-commercetransaction, the entry mode field will indicate that the card was notpresent. As a result, the token service provider may determine that thetokenized PAN is being used improperly, and can decline the transaction.

FIG. 3 illustrates a payment system 300 in which teachings of thepresent exemplary embodiments may be applied. (FIG. 3 is adapted fromthe EMV Tokenization Standard). Referring to FIG. 3 , individualusers/cardholders are indicated by reference numeral 302 and a tokenrequestor is indicated by 306. In this example, the token requestor 306may request or manufacture a payment card such as the payment card 100in FIGS. 1 and 2 , and provide the payment card to the user 302.According to various exemplary embodiments, the payment card may includean electronic chip that has tokenized payment account information storedtherein in place of actual payment account information. Cardholders 302may present electronic chip payment devices to merchant 304 toconsummate a purchase transaction. In some cases the merchant 304 mayalso be a token requestor 306 (e.g., for implementing a tokenizedcard-on-file arrangement for e-commerce transactions with a cardholder302). The merchant 304 may receive a token value from a cardholder’spayment device and issue an authorization request to initiate processingof a payment transaction in the payment system 300. For example, themerchant 304 may issue the authorization request to acquirer 308 whichmay be a financial institution that provides banking services to themerchant 304, and that receives and routes authorization requestsoriginated from the merchant 304.

According to various exemplary embodiments, merchant 304 may include areader (an example of which is described with reference to FIG. 4 )which may read the tokenized payment account information from anelectronic chip of a payment card or other payment device of thecardholder 302. Here, the merchant 304 may receive the tokenized paymentaccount information from the electronic chip and be unaware that thepayment account information has been tokenized. For example, thetokenized payment account information may include a tokenized PAN and atokenized expiry having a valid format such that they are notdistinguishable from an actual PAN and an actual expiration date.

FIG. 3 also includes a block 310 that represents a token serviceprovider. The token service provider 310 may also be the operator of apayment network such as that operated by MasterCard InternationalIncorporated, the assignee hereof. The token service provider 310 may beauthorized in the payment system 300 to issue tokens to token requestors(one such token requestor represented by block 306 in FIG. 3 ). Inissuing tokens, the token service provider 310 may perform suchfunctions as operating and maintaining a token vault 312, generating andissuing tokens (in accordance, e.g., with aspects of the presentdisclosure), assuring security and proper controls, token provisioning(e.g., personalizing payment cards, etc. with token values), registeringtoken requestors, and the like. In addition to representing the tokenservice provider, block 310 should also be understood to represent oneor more computer systems operated by the token service provider.

Block 314 in FIG. 3 represents an issuer of payment card accounts heldby the cardholders 302. In some embodiments, some or all of thefunctions of the token service provider 310 may be taken on or performedby the issuer 314. Referring again to the token requestor 306, this rolemay be taken on by entities such as card-on-file merchants (as notedabove); acquirers, acquirer processors, and payment gateways (acting formerchants); payment enablers such as OEMs (original equipmentmanufacturers); digital wallet service providers or issuers 314. Tokenrequestors may be required to register with the token service provider310. Furthermore, the token service provider 310 may interact withanother payment network 316. It will be readily appreciated that apractical embodiment of the payment system 300 may include numerousmerchants, token requestors, acquirers and issuers, rather than one ofeach as depicted in FIG. 3 .

In the example of FIG. 3 , the cardholder 302 may make or authorize apayment for a transaction with the merchant 304 to purchase goods and/orservices. According to various exemplary embodiments, the cardholder 302may use an EMV payment card having embedded therein an electronic chip.The electronic chip may store tokenized payment account information.Accordingly, when the merchant 304 reads the EMV payment card themerchant may receive tokenized payment account information therefrom.The merchant 304 may then transmit the tokenized payment accountinformation in an authorization request message (such as a messagedefined by ISO 8583). For example, the authorization request may betransmitted to the acquirer 308 and then to the token service provider310, transmitted directly from the merchant 304 to the token serviceprovider 310, and the like.

In response to receiving the authorization request message including thetokenized payment account information, the token service provider 310may determine that the authorization request message includes tokenizedpayment account information. For example, the token service provider 310may determine that a PAN included within the authorization requestmessage is a tokenized PAN based on the BIN number of the tokenized PAN.The token service provider 310 may also determine from the tokenized PANcorresponds to an electronic chip card or EMV payment card. Accordingly,the token service provider 310 may determine whether the tokenized PANwas received from a contact or contactless read electronic chip cardbased on an entry mode field included in the authorization requestmessage. If the token service provider 310 determines that the

tokenized PAN has been read from an electronic chip card, the tokenservice provider 310 may translate the tokenized PAN into an actual PANand transmit the PAN directly to the issuer 314, or to the acquirer 308.Here, the token service provider 310 may store routing tables which cantranslate the tokenized payment account information into actual paymentaccount information and determine where to transmit the tokenizedpayment information based on the routing tables. In some examples, thetoken service provider 310 may also store a translation of tokenizedexpiry, and the like, and thereby determine an actual expiry of theelectronic chip card based on the routing tables.

FIG. 4 illustrates a payment terminal 400 in accordance with anexemplary embodiment. In the example of FIG. 4 , the payment terminal400 includes a reader 410, an input unit 420, a processor 430, and anetwork interface 440. It should also be appreciated that the paymentterminal 400 may include additional components not specifically shown,and/or one or more of the components shown may be omitted. As anon-limiting example, the payment terminal 400 may be a point of saleterminal (POS terminal) including an electronic device for processingcard payments, for example, at retail locations, and the like. Thepayment terminal 400 may include a combination of software and hardwarethat allows retail locations to accept card payments without updatingtheir cash registers to read cards directly.

The reader 410 may read tokenized payment card information from anelectronic chip and/or from a magnetic stripe of a payment card such asan EMV payment card. For example, the reader 410 may read tokenizedpayment card information by contact with the electronic chip of thepayment card. Here, the reader 410 may have electrical contacts capableof contacting electrical contacts of the electronic chip included in thepayment card. Accordingly, when connect, the electronic chip maytransfer the tokenized payment account information to the reader 410through the electrical contacts. In some examples, the reader 410 mayinclude a slot or other cavity capable of receiving at least a portionof the payment card and for holding the payment card therein. Also, thereader 410 may have electrical contacts included within the slot suchthat when the card is fully inserted into the slot, the electricalcontacts of the reader 410 may be brought into contact with theelectrical contacts of the electronic chip of the payment card. Asanother example, the reader 410 may wireless read tokenized paymentaccount information from the electronic chip of the payment card. Forexample, the reader 410 may have a short range communication system thatis able to receive tokenized payment information from the electronicchip of the payment card through wireless radio waves or a magneticfield.

The input unit 420 may receive additional information from a user toverify that the user is a cardholder corresponding to the paymentaccount linked to the payment card. For example, the input unit 420 mayreceive a PIN and/or a signature verification from the user. In responseto the tokenized payment account information being read from theelectronic chip of the payment card, the processor 430 may generate anauthorization request message such as an ISO 8583 message and thenetwork interface 440 may transmit the authorization request message toan acquirer and/or other devices within a payment network or paymentsystem such as shown in the example of FIG. 3 . The network interfacemay also transmit the verification information provided by the user andreceived through the input unit 420 to the payment network. Furthermore,the processor 430 may control the overall operations of the paymentterminal 400.

According to various aspects, the payment terminal 400 may receivetokenized payment account information stored on a payment card. Forexample, the payment card may include a substrate, and an electronicchip may be attached to or included in the substrate, and the tokenizedpayment account information may be stored on the electronic chip. Thetokenized payment account information read from the payment card mayinclude a tokenized PAN and a tokenized expiration date, correspondingto a payment account linked to the payment card. Accordingly, thepayment terminal may reads tokenized payment account information off acustomer’s credit or debit card (via an electronic chip or magneticstripe), checks whether sufficient funds are available in a customer’sbank account, transfers the funds from the customer’s account to theseller’s account (or at least, accounts for the transfer with the creditcard network), record the transaction, and print a receipt for thecustomer.

FIG. 5 illustrates a payment processing method 500 in accordance with anexemplary embodiment. Referring to FIG. 5 , the method 500 forprocessing a payment may be performed by a payment terminal such aspayment terminal 400 shown in FIG. 4 . In this example, whether apayment card included an electronic chip is present is detected in 510.For example, the payment card may be inserted into a slot causingelectrical contacts from the electronic chip of the payment card tocontact electrical contacts of the payment terminal. As another example,the payment terminal may detect wireless transmissions from theelectronic chip of the payment card when the payment card is broughtwithin a predetermined proximity of the payment terminal. As a result ofthe reading, tokenized payment account information such as a tokenizedPAN and a tokenized expiration date corresponding to a payment accountlinked to the payment card may be transferred from the payment card tothe payment terminal.

In 520, tokenized payment account information is read from the paymentcard. In this example, the reading of tokenized payment accountinformation may be contact or contactless and may be from an electronicchip of the payment card. Here, the payment card may include asubstrate, the electronic chip may be attached to or included in thesubstrate, and the tokenized payment account information may be storedon the electronic chip. The method may further include receiving userinput for verifying the payment card and the cardholder. For example,the user input may include a PIN number or a signature verification.Also, in 540 the method further includes transmitting the tokenizedpayment account information read from the electronic chip of the paymentcard to a payment network.

According to various exemplary embodiments, domain or other controls maybe applied by a token service provider or other entity on the paymentnetwork during a payment authorization transaction in order to improvefraud control. For example, cross channel fraud may be prohibited byensuring that a token vault operated by the token service providerapplies domain restrictions for transactions that are initiated withpayment tokens read from electronic chip payment cards.

FIG. 6 illustrates a method 600 of enforcing domain restrictions withina payment system in accordance with an exemplary embodiment. That is,portions of a transaction enforcing domain restrictions are shown inFIG. 6 , in which steps associated with processing by an entity such asa token service provider are shown. At 610 a token validation requestmay be received (e.g., during a payment transaction authorizationprocess). The token validation request may include information about atransaction, including (depending on the type of transaction) a paymenttoken and payment token expiry, or a PAN and a PAN expiry. A transaction“entry mode” indicator may also be received (identifying how thetransaction was entered) such as a transaction entry mode indicator inan ISO 8583 message. For example, the entry mode may indicate whetherthe transaction was initiated at a magnetic stripe reader, at a chipcard reader, at a PayPass terminal, in an online transaction, in a mailorder or telephone transaction, or the like. The token validationrequest may also include a chip cryptogram (in the case of chip cardtransactions).

Processing continues at 620 where the cryptogram (if any) is validated.If the cryptogram cannot be validated, the transaction authorizationfails, and a decline message response is returned. Processing continuesat 630 where the domain is validated. For example, if the receivedinformation indicates that the transaction was initiated at a magneticstripe reader, then the PAN and PAN expiry may be validated (and if aPayment Token is detected, the transaction is declined). The result isimproved fraud protection and controls ensuring that a payment cardpursuant to the present invention is used in appropriate domains. In 640a result of the validation is transmitted to a payment network, amerchant, or the like.

According to various exemplary embodiments, described herein is apayment card such as an EMV payment card including an electronic chipand/or a magnetic stripe that have stored therein tokenized paymentaccount information instead of actual payment account information. Forexample, a tokenized PAN and a tokenized expiry may be stored within anelectronic chip of an EMV payment card. As another example, a tokenizedPAN and a tokenized expiry may be encoded within the magnetic stripe ofa payment card. Accordingly, tokens may be read from a payment card by apayment terminal during a transaction instead of sensitive payment cardand payment account information.

As used herein and in the appended claims, the term “computer” should beunderstood to encompass a single computer or two or more computers incommunication with each other. The term “processor” should be understoodto encompass a single processor or two or more processors incommunication with each other. The term “memory” should be understood toencompass a single memory or storage device or two or more memories orstorage devices. Also, a “server” includes a computer device or systemthat responds to numerous requests for service from other devices.

The flow charts and descriptions thereof herein should not be understoodto prescribe a fixed order of performing the method steps describedtherein. Rather the method steps may be performed in any order that ispracticable.

As used herein, the terms card, transaction card, financial transactioncard, payment card, and the like, refer to any suitable transactioncard, such as a credit card, a debit card, a prepaid card, a chargecard, a membership card, a promotional card, a frequent flyer card, anidentification card, a gift card, and the like. As another example, theterms may refer to any other device or media that may hold paymentaccount information, such as mobile phones, Smartphones, personaldigital assistants (PDAs), key fobs, computers, and the like. Thetransaction card can be used as a method of payment for performing atransaction.

The term “payment card account number” includes a number that identifiesa payment card system account or a number carried by a payment card, ora number that is used to route a transaction in a payment system thathandles debit card and/or credit card transactions. The term “paymentcard” includes a credit card, debit card, prepaid card, or other type ofpayment instrument, whether an actual physical card or virtual. As usedherein, the term “payment card system” or “payment system” refers to asystem for handling purchase transactions and related transactions. Anexample of such a system is the one operated by MasterCard InternationalIncorporated, the assignee of the present disclosure. In someembodiments, the term “payment card system” may be limited to systems inwhich member financial institutions issue payment card accounts toindividuals, businesses and/or other organizations.

A number of terms are used herein. For example, the term “paymentnetwork.” One well known example of a payment network is referred to asthe “Banknet” system, and is operated by MasterCard InternationalIncorporated, which is the assignee hereof. The term “issuer” may referto a payment card issuer server computer (or network of computers) suchas issuer 106. The payment card issuer server computer 106 may beoperated by or on behalf of a financial institution (“FI”) that issuespayment card accounts to individual users. For example, the payment cardissuer server computer 106 may perform such functions as (a) receivingand responding to requests for authorization of payment card accounttransactions to be charged to payment card accounts issued by the FI;and (b) tracking and storing transactions and maintaining accountrecords.

As will be appreciated based on the foregoing specification, theabove-described examples of the disclosure may be implemented usingcomputer programming or engineering techniques including computersoftware, firmware, hardware or any combination or subset thereof. Anysuch resulting program, having computer-readable code, may be embodiedor provided within one or more non transitory computer-readable media,thereby making a computer program product, i.e., an article ofmanufacture, according to the discussed examples of the disclosure. Forexample, the non-transitory computer-readable media may be, but is notlimited to, a fixed drive, diskette, optical disk, magnetic tape, flashmemory, semiconductor memory such as read-only memory (ROM), and/or anytransmitting/receiving medium such as the Internet or othercommunication network or link. The article of manufacture containing thecomputer code may be made and/or used by executing the code directlyfrom one medium, by copying the code from one medium to another medium,or by transmitting the code over a network.

The computer programs (also referred to as programs, software, softwareapplications, “apps”, or code) may include machine instructions for aprogrammable processor, and may be implemented in a high-levelprocedural and/or object-oriented programming language, and/or inassembly/machine language. As used herein, the terms “machine-readablemedium” and “computer-readable medium” refer to any computer programproduct, apparatus and/or device (e.g., magnetic discs, optical disks,memory, programmable logic devices (PLDs)) used to provide machineinstructions and/or data to a programmable processor, including amachine-readable medium that receives machine instructions as amachine-readable signal. The “machine-readable medium” and“computer-readable medium,” however, do not include transitory signals.The term “machine-readable signal” refers to any signal that may be usedto provide machine instructions and/or any other kind of data to aprogrammable processor.

The above descriptions and illustrations of processes herein should notbe considered to imply a fixed order for performing the process steps.Rather, the process steps may be performed in any order that ispracticable, including simultaneous performance of at least some steps.

Although the present invention has been described in connection withspecific exemplary embodiments, it should be understood that variouschanges, substitutions, and alterations apparent to those skilled in theart can be made to the disclosed embodiments without departing from thespirit and scope of the invention as set forth in the appended claims.

What is claimed is:
 1. A computing system comprising: a storage devicecomprising a token value; and a processor configured to receive, via anapplication programming interface (API), a primary account number of apayment card account of an integrated chip (IC) card, convert theprimary account number into a token and store a mapping of the primaryaccount number to the token within the token vault, assign a chip carddomain restriction to the token, wherein the chip card domainrestriction only authorizes use of the token with a chip card, and embedthe PAN and the chip card domain restriction into the IC chip card. 2.The computing system of claim 1, wherein the processor is furtherconfigured to receive a payment authorization request message with achip cryptogram and the token included therein, and determine whether toauthorize the payment authorization request message based on the chipcryptogram and a domain from which the token within the paymentauthorization request message is submitted.
 3. The computing system ofclaim 2, wherein the processor is further configured to read anidentifier of the chip card entry mode from an entry mode field of thepayment authorization request message, and approve the paymentauthorization request message in response to reading the identifier. 4.The computing system of claim 2, wherein the processor is furtherconfigured to read an identifier of one of an e-commerce entry mode anda magnetic stripe entry mode from an entry mode field of the paymentauthorization request message, and decline the payment authorizationrequest message in response to reading the identifier.
 5. The computingsystem of claim 2, wherein the processor is further configured totransmit an authorization response message with an identifier of thedetermination to a computing system that transmitted the paymentauthorization request message, in response to the determination.
 6. Thecomputing system of claim 2, wherein the processor is configured toreceive the payment authorization request message with the tokenincluded therein over a computer network from a card reading device thatreads the token from an electrical contact point of a chip attached tothe IC chip card.
 7. The computing system of claim 2, wherein theprocessor is further configured to translate the token back to thepayment account number based on the mapping, and transmit the translatedpayment account number to an issuer of the payment account number basedon a routing table.
 8. A method comprising: storing a token value in astorage; receiving, via an application programming interface (API), aprimary account number of a payment card account of an integrated chip(IC) card; converting the primary account number into a token and storea mapping of the primary account number to the token within the tokenvault; assigning a chip card domain restriction to the token, whereinthe chip card domain restriction only authorizes use of the token with achip card; and embedding the PAN and the chip card domain restrictioninto the IC chip card.
 9. The method of claim 8, wherein the methodfurther comprises receiving a payment authorization request message witha chip cryptogram and the token included therein, and determiningwhether to authorize the payment authorization request message based onthe chip cryptogram and a domain from which the token within the paymentauthorization request message is submitted.
 10. The method of claim 9,wherein the method further comprises reading an identifier of the chipcard entry mode from an entry mode field of the payment authorizationrequest message, and approving the payment authorization request messagein response to reading the identifier.
 11. The method of claim 9,wherein the method further comprises reading an identifier of one of ane-commerce entry mode and a magnetic stripe entry mode from an entrymode field of the payment authorization request message, and decliningthe payment authorization request message in response to reading theidentifier.
 12. The method of claim 9, wherein the method furthercomprises transmitting an authorization response message with anidentifier of the determination to a computing system that transmittedthe payment authorization request message, in response to thedetermination.
 13. The method of claim 9, wherein the receiving thepayment authorization request message comprises receiving the paymentauthorization message over a computer network from a card reading devicethat reads the token from an electrical contact point of a chip attachedto the IC chip card.
 14. The method of claim 9, wherein the methodfurther comprises translating the token back to the payment accountnumber based on the mapping, and transmitting the translated paymentaccount number to an issuer of the payment account number based on arouting table.
 15. A non-transitory computer-readable medium comprisinginstructions which when executed by a processor cause a computer toperform a method comprising: storing a token value in a storage;receiving, via an application programming interface (API), a primaryaccount number of a payment card account of an integrated chip (IC)card; converting the primary account number into a token and store amapping of the primary account number to the token within the tokenvault; assigning a chip card domain restriction to the token, whereinthe chip card domain restriction only authorizes use of the token with achip card; and embedding the PAN and the chip card domain restrictioninto the IC chip card.
 16. The non-transitory computer-readable mediumof claim 15, wherein the method further comprises receiving a paymentauthorization request message with a chip cryptogram and the tokenincluded therein, and determining whether to authorize the paymentauthorization request message based on the chip cryptogram and a domainfrom which the token within the payment authorization request message issubmitted.
 17. The non-transitory computer-readable medium of claim 16,wherein the method further comprises reading an identifier of the chipcard entry mode from an entry mode field of the payment authorizationrequest message, and approving the payment authorization request messagein response to reading the identifier.
 18. The non-transitorycomputer-readable medium of claim 16, wherein the method furthercomprises reading an identifier of one of an e-commerce entry mode and amagnetic stripe entry mode from an entry mode field of the paymentauthorization request message, and declining the payment authorizationrequest message in response to reading the identifier.
 19. Thenon-transitory computer-readable medium of claim 16, wherein the methodfurther comprises transmitting an authorization response message with anidentifier of the determination to a computing system that transmittedthe payment authorization request message, in response to thedetermination.
 20. The non-transitory computer-readable medium of claim16, wherein the receiving the payment authorization request messagecomprises receiving the payment authorization message over a computernetwork from a card reading device that reads the token from anelectrical contact point of a chip attached to the IC chip card.